forked from Sokomine/yl_speak_up
1019 lines
39 KiB
Lua
1019 lines
39 KiB
Lua
-- spimple trading: one item(stack) for another item(stack)
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-- fallback message if something went wrong
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yl_speak_up.trade_fail_fs = "size[6,2]"..
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"label[0.2,0.5;Ups! The trade is not possible.\nPlease notify an admin.]"..
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"button_exit[2,1.5;1,0.9;exit;Exit]"
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-- helper function for
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-- yl_speak_up.input_do_trade_simple (here) and
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-- yl_speak_up.input_trade_via_buy_button (in fs_trade_via_buy_button.lua)
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--
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-- delete a trade; this can be done here only if..
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-- * it is a trade from the trade list (not an effect of a dialog option)
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-- * it is a trade associated with a dialog option and the player is in
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-- edit mode
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-- * the player has the necessary privs
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-- This option is available without having to enter edit mode first.
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yl_speak_up.delete_trade_simple = function(player, trade_id)
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local pname = player:get_player_name()
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local n_id = yl_speak_up.speak_to[pname].n_id
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if(not(yl_speak_up.may_edit_npc(player, n_id))) then
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-- not a really helpful message - but then, this should never happen (player probably cheated)
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return yl_speak_up.trade_fail_msg
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end
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-- get the necessary dialog data
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local dialog = yl_speak_up.speak_to[pname].dialog
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-- store d_id and o_id in order to be able to return to the right
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-- edit options dialog
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local back_to_d_id = nil
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local back_to_o_id = nil
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if(dialog and dialog.trades and trade_id
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and dialog.trades[ trade_id ] and n_id) then
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if( dialog.trades[ trade_id ].d_id
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and yl_speak_up.edit_mode[pname] ~= n_id) then
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yl_speak_up.show_fs(player, "msg", {
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input_to = "yl_speak_up:do_trade_simple",
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formspec = "size[6,2]"..
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"label[0.2,-0.2;"..
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"Trades that are attached to dialog options\n"..
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"can only be deleted in edit mode. Please tell\n"..
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"your NPC that you are its owner and have\n"..
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"new commands!]"..
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"button[2,1.5;1,0.9;back_from_error_msg;Back]"})
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return
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end
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if( dialog.trades[ trade_id ].d_id ) then
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back_to_d_id = dialog.trades[ trade_id ].d_id
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back_to_o_id = dialog.trades[ trade_id ].o_id
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end
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-- log the change
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yl_speak_up.log_change(pname, n_id,
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"Trade: Deleted offer "..tostring(trade_id)..".")
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-- delete this particular trade
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dialog.trades[ trade_id ] = nil
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-- actually save the dialog to disk
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yl_speak_up.save_dialog(n_id, dialog)
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-- we are done with this trade
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yl_speak_up.trade[pname] = nil
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yl_speak_up.speak_to[pname].trade_id = nil
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yl_speak_up.speak_to[pname].trade_done = nil
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end
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-- always return to edit options dialog if deleting a trade that belonged to one
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if(back_to_d_id and back_to_o_id) then
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yl_speak_up.show_fs(player, "edit_option_dialog",
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{n_id = n_id, d_id = back_to_d_id, o_id = back_to_o_id})
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return
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end
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-- go back showing the trade list (since we deleted this trade)
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yl_speak_up.show_fs(player, "trade_list")
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return
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end
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-- possible inputs:
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-- fields.edit_trade_simple go on to showing the add_trade_simple formspec
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-- fields.abort_trade_simple, ESC, depends on context
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-- fields.delete_trade_simple delete this trade
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-- fields.finished_trading
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-- if in edit mode: go back to edit options dialog
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-- if traded at least once: go on to the target dialog
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-- if not traded: go back to the original dialog
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yl_speak_up.input_do_trade_simple = function(player, formname, fields)
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if(not(player)) then
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return 0
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end
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local pname = player:get_player_name()
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-- which trade are we talking about?
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local trade = yl_speak_up.trade[pname]
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-- show the trade list
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if(fields.back_to_trade_list) then
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yl_speak_up.show_fs(player, "trade_list")
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return
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end
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-- get from a dialog option trade back to the list of all these trades
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if(fields.show_trade_list_dialog_options) then
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yl_speak_up.show_fs(player, "trade_list", true)
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return
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end
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-- a new trade has been stored - show it
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if(fields.trade_simple_stored) then
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yl_speak_up.show_fs(player, "trade_simple", yl_speak_up.speak_to[pname].trade_id)
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return
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end
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if(fields.buy_directly) then
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local error_msg = yl_speak_up.do_trade_direct(player)
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if(error_msg ~= "") then
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yl_speak_up.show_fs(player, "msg", {
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input_to = "yl_speak_up:do_trade_simple",
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formspec = "size[6,2]"..
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"label[0.2,-0.2;"..error_msg.."]"..
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"button[2,1.5;1,0.9;back_from_error_msg;Back]"})
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return
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end
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yl_speak_up.show_fs(player, "trade_simple", yl_speak_up.speak_to[pname].trade_id)
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return
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end
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local n_id = yl_speak_up.speak_to[pname].n_id
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-- if in edit mode: go back to the edit options dialog
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if(fields.back_to_edit_options
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and yl_speak_up.edit_mode[pname] == n_id and n_id) then
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local dialog = yl_speak_up.speak_to[pname].dialog
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local tr = dialog.trades[ trade.trade_id ]
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if(tr) then
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-- done trading
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yl_speak_up.speak_to[pname].target_d_id = nil
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yl_speak_up.speak_to[pname].trade_id = nil
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-- go to the edit options dialog
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yl_speak_up.show_fs(player, "edit_option_dialog",
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{n_id = n_id, d_id = tr.d_id, o_id = tr.o_id})
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return
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end
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end
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if(fields.delete_trade_simple) then
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yl_speak_up.delete_trade_simple(player, trade.trade_id)
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return
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end
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-- can the player edit this trade?
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if(fields.edit_trade_simple
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and (yl_speak_up.edit_mode[pname] == yl_speak_up.speak_to[pname].n_id
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and (yl_speak_up.speak_to[pname].n_id))) then
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-- force edit mode for this trade
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trade.edit_trade = true
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end
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local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
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local player_inv = player:get_inventory()
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-- give the items from the pay slot back
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local pay = trade_inv:get_stack("pay", 1)
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if( player_inv:room_for_item("main", pay)) then
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player_inv:add_item("main", pay)
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trade_inv:set_stack("pay", 1, "")
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end
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-- clear the buy slot as well
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trade_inv:set_stack("buy", 1, "")
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-- show the edit trade formspec
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if(fields.edit_trade_simple) then
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yl_speak_up.show_fs(player, "add_trade_simple", trade.trade_id)
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return
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end
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-- go back to the main dialog
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if(fields.abort_trade_simple or fields.quit or fields.finished_trading) then
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-- was the action a success?
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local success = not(not(trade and trade.trade_done and trade.trade_done > 0))
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local a_id = trade.a_id
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local o_id = trade.o_id
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yl_speak_up.debug_msg(player, n_id, o_id, "Ending trade.")
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-- done trading
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yl_speak_up.speak_to[pname].target_d_id = nil
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yl_speak_up.speak_to[pname].trade_id = nil
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-- execute the next action
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yl_speak_up.execute_next_action(player, a_id, success)
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return
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end
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-- show this formspec again
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yl_speak_up.show_fs(player, "trade_simple")
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end
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-- simple trade: add a new trade or edit existing one (by storing a new one);
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-- set trade_id to "new" if it shall be a new trade added to the trade list;
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-- set trade_id to "<d_id> <o_id>" if it shall be a result/effect of a dialog option;
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yl_speak_up.get_fs_add_trade_simple = function(player, trade_id)
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if(not(player)) then
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return yl_speak_up.trade_fail_fs
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end
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local pname = player:get_player_name()
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local n_id = yl_speak_up.speak_to[pname].n_id
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local dialog = yl_speak_up.speak_to[pname].dialog
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-- is this player allowed to edit the NPC and his trades? If not abort.
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if(not(yl_speak_up.may_edit_npc(player, n_id)) or not(dialog) or not(dialog.n_npc)) then
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return "size[9,2]"..
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"label[2.0,1.8;Ups! Something went wrong.]"..
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"button[6.2,1.6;2.0,0.9;abort_trade_simple;Back]"
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end
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-- store the trade_id (so that it doesn't have to be transfered in a hidden field)
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yl_speak_up.speak_to[pname].trade_id = trade_id
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local delete_button =
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"button[0.2,2.6;1.0,0.9;delete_trade_simple;Delete]"..
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"tooltip[delete_trade_simple;Delete this trade.]"
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-- no point in deleting a new trade - it doesn't exist yet
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if(trade_id and trade_id == "new") then
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delete_button = ""
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end
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return "size[8.5,9]"..
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"label[4.35,0.8;"..minetest.formspec_escape(dialog.n_npc).." sells:]"..
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"list[current_player;main;0.2,4.85;8,1;]"..
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"list[current_player;main;0.2,6.08;8,3;8]"..
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-- show the second slot of the setup inventory in the detached player's inv
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"list[detached:yl_speak_up_player_"..pname..";setup;2,1.5;1,1;]"..
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-- show the second slot of said inventory
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"list[detached:yl_speak_up_player_"..pname..";setup;5,1.5;1,1;1]"..
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"label[0.5,0.0;Configure trade with "..minetest.formspec_escape(dialog.n_npc)..":]"..
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"label[1.5,0.8;The customer pays:]"..
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"label[1.5,3.8;Put items in the two slots and click on \"Store trade\".]"..
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"label[1.5,4.2;You will get your items back when storing the trade.]"..
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-- annoyingly, the height value no longer works :-(
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"label[0.2,2.5;Item\nname:]"..
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"field[1.5,3.2;3,0.2;item_name_price;;]"..
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"label[4.35,2.5;If you don't have the item you\n"..
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"want to buy, then enter its item\n"..
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"name (i.e. default:diamond) here.]"..
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"button[0.2,1.6;1.0,0.9;abort_trade_simple;Abort]"..
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delete_button..
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"button[6.2,1.6;2.0,0.9;store_trade_simple;Store trade]"..
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"tooltip[store_trade_simple;Click here to store this as a new trade. Your\n"..
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"items will be returned to you and the trade will\n"..
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"will be shown the way the customer can see it.]"..
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"tooltip[abort_trade_simple;Abort setting up this new trade.]"
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end
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-- when closing the yl_speak_up.get_fs_add_trade_simple formspec:
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-- give the items back to the player (he took them from his inventory and
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-- had no real chance to put them elsewhere - so there really ought to be
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-- room enough)
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yl_speak_up.add_trade_simple_return_items = function(player, trade_inv, pay, buy)
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local player_inv = player:get_inventory()
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if( pay and player_inv:room_for_item("main", pay)) then
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player_inv:add_item("main", pay)
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trade_inv:set_stack("setup", 1, "")
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end
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if( buy and player_inv:room_for_item("main", buy)) then
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player_inv:add_item("main", buy)
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trade_inv:set_stack("setup", 2, "")
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end
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end
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-- the player wants to add a simple trade; handle formspec input
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-- possible inputs:
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-- fields.back_from_error_msg show this formspec here again
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-- fields.store_trade_simple store this trade as a result and
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-- go on to showing the do_trade_simple formspec
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-- fields.delete_trade_simple delete this trade
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-- go back to edit options dialog
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-- abort_trade_simple, ESC go back to edit options dialog
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-- The rest is inventory item movement.
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yl_speak_up.input_add_trade_simple = function(player, formname, fields)
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if(not(player)) then
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return 0
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end
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local pname = player:get_player_name()
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local input_to = "add_trade_simple"
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-- are we editing an action of the type trade?
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if( yl_speak_up.speak_to[pname][ "tmp_action" ]
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and yl_speak_up.speak_to[pname][ "tmp_action" ].what == 3) then
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input_to = "edit_actions"
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end
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-- we return from showing an error message (the player may not have noticed
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-- a chat message while viewing a formspec; thus, we showed a formspec message)
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if(fields.back_from_error_msg) then
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yl_speak_up.show_fs(player, input_to)
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return
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end
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-- which trade are we talking about?
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local trade_id = yl_speak_up.speak_to[pname].trade_id
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-- this also contains the inventory list "setup" where the player placed the items
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local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
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-- fields.abort_trade_simple can be ignored as it is similar to ESC
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local pay = trade_inv:get_stack("setup", 1)
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local buy = trade_inv:get_stack("setup", 2)
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-- clicking on abort here when adding a new trade via the trade list
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-- goes back to the trade list (does not require special privs)
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if(fields.abort_trade_simple and trade_id == "new") then
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-- we are no longer doing a particular trade
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yl_speak_up.speak_to[pname].trade_id = nil
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-- return the items (setting up the trade was aborted)
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yl_speak_up.add_trade_simple_return_items(player, trade_inv, pay, buy)
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-- ..else go back to the edit options formspec
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yl_speak_up.show_fs(player, "trade_list")
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return
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end
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-- adding a new trade via the trade list?
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if(not(trade_id) and fields.store_trade_simple) then
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trade_id = "new"
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end
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local n_id = yl_speak_up.speak_to[pname].n_id
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local d_id = yl_speak_up.speak_to[pname].d_id
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local o_id = yl_speak_up.speak_to[pname].o_id
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-- the trade can only be changed in edit mode
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if((not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id)
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-- exception: when adding a new trade via the trade list
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-- (that is allowed without having to be in edit mode)
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and not(trade_id == "new" and yl_speak_up.may_edit_npc(player, n_id))) then
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-- return the items (setting up the trade was aborted)
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yl_speak_up.add_trade_simple_return_items(player, trade_inv, pay, buy)
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return
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end
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-- store the new trade
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if(fields.store_trade_simple) then
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local error_msg = ""
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local simulated_pay = false
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if(pay:is_empty() and fields.item_name_price and fields.item_name_price ~= "") then
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pay = ItemStack(fields.item_name_price)
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simulated_pay = true
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end
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-- check for error conditions
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if(pay:is_empty()) then
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error_msg = "What shall the customer pay?\nWe don't give away stuff for free here!"
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elseif(buy:is_empty()) then
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error_msg = "What shall your NPC sell?\nCustomers won't pay for nothing!"
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elseif(pay:get_wear() > 0 or buy:get_wear() > 0) then
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error_msg = "Selling used items is not possible."
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elseif(not(minetest.registered_items[ pay:get_name() ])
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or not(minetest.registered_items[ buy:get_name() ])) then
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error_msg = "Unkown items cannot be traded."
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elseif(pay:get_name() == buy:get_name()) then
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error_msg = "Selling *and* buying the same item\nat the same time makes no sense."
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else
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-- get the necessary dialog data
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local dialog = yl_speak_up.speak_to[pname].dialog
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-- player_gives (pay stack):
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local ps = pay:get_name().." "..tostring(pay:get_count())
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-- npc_gives (buy stack):
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local bs = buy:get_name().." "..tostring(buy:get_count())
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local r_id = "?"
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if(not(dialog.trades)) then
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dialog.trades = {}
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end
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-- is this a trade attached to the trade list?
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-- or do we have to create a new trade ID?
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if(trade_id == "new") then
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-- if the player adds the same trade again, the ID is reused; other
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-- than that, the ID is uniq
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-- (the ID is formed so that we can later easily sort the offers by
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-- the name of the buy stack - which is more helpful for the player
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-- than sorting by the pay stack)
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trade_id = "sell "..bs.." for "..ps
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-- log the change
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yl_speak_up.log_change(pname, n_id,
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"Trade: Added offer "..tostring(trade_id)..".")
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-- add this new trade
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dialog.trades[ trade_id ] = {pay={ps},buy={bs}}
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-- actually save the dialog to disk
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yl_speak_up.save_dialog(n_id, dialog)
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-- store the newly created trade_id
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yl_speak_up.speak_to[pname].trade_id = trade_id
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-- all ok so far
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error_msg = nil
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-- storing trades that are associated with particular dialogs and options
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-- requires d_id and o_id to be set
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elseif(trade_id ~= "new" and (not(d_id) or not(o_id))) then
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error_msg = "Internal error. o_id was not set."
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else
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-- record this as a change, but do not save do disk yet
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table.insert(yl_speak_up.npc_was_changed[ n_id ],
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"Dialog "..d_id..": Trade "..tostring(trade_id).." added to option "..
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tostring(o_id)..".")
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-- add this new trade - complete with information to which dialog and
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-- to which option the trade belongs
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dialog.trades[ trade_id ] = {pay={ps},buy={bs}, d_id = d_id, o_id = o_id}
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-- all ok so far
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error_msg = nil
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end
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-- do not return yet - the items still need to be given back!
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end
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-- make sure we don't create items here out of thin air
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if(simulated_pay) then
|
|
pay = ItemStack("")
|
|
end
|
|
-- show error message (that leads back to this formspec)
|
|
if(error_msg) then
|
|
yl_speak_up.show_fs(player, "msg", {
|
|
input_to = "yl_speak_up:"..input_to,
|
|
formspec =
|
|
"size[6,2]"..
|
|
"label[0.2,0.5;"..error_msg.."]"..
|
|
"button[2,1.5;1,0.9;back_from_error_msg;Back]"})
|
|
return
|
|
end
|
|
|
|
-- we need a way of deleting trades as well;
|
|
-- this affects only trades that are associated with dialogs and options;
|
|
-- trades from the trade list are deleted more directly
|
|
elseif(fields.delete_trade_simple) then
|
|
-- delete this result (if it exists)
|
|
-- get the necessary dialog data
|
|
local dialog = yl_speak_up.speak_to[pname].dialog
|
|
-- record this as a change
|
|
table.insert(yl_speak_up.npc_was_changed[ n_id ],
|
|
"Dialog "..d_id..": Trade "..tostring(trade_id).." deleted from option "..
|
|
tostring(o_id)..".")
|
|
if(not(dialog.trades)) then
|
|
dialog.trades = {}
|
|
end
|
|
-- delete the trade type result
|
|
if(trade_id) then
|
|
dialog.trades[ trade_id ] = nil
|
|
end
|
|
-- do not return yet - the items still need to be given back!
|
|
end
|
|
|
|
-- return the items after successful setup
|
|
yl_speak_up.add_trade_simple_return_items(player, trade_inv, pay, buy)
|
|
|
|
local dialog = yl_speak_up.speak_to[pname].dialog
|
|
if(not(dialog.trades)) then
|
|
dialog.trades = {}
|
|
end
|
|
if(dialog.trades[ trade_id ] and dialog.trades[ trade_id ].d_id
|
|
and input_to ~= "edit_actions") then
|
|
yl_speak_up.speak_to[pname].trade_id = trade_id
|
|
-- tell the player that the new trade has been added
|
|
yl_speak_up.show_fs(player, "msg", {
|
|
input_to = "yl_speak_up:do_trade_simple",
|
|
formspec =
|
|
"size[6,2]"..
|
|
"label[0.2,0.5;The new trade has been configured successfully.]"..
|
|
"button[1.5,1.5;2,0.9;trade_simple_stored;Show trade]"})
|
|
-- return back to trade list
|
|
elseif(not(o_id)) then
|
|
-- we are no longer trading
|
|
yl_speak_up.speak_to[pname].trade_id = nil
|
|
-- ..else go back to the edit options formspec
|
|
yl_speak_up.show_fs(player, "trade_list")
|
|
else
|
|
-- we are no longer trading
|
|
yl_speak_up.speak_to[pname].trade_id = nil
|
|
-- the trade has been stored or deleted successfully
|
|
return true
|
|
-- -- ..else go back to the edit options formspec (obsolete)
|
|
-- yl_speak_up.show_fs(player, "edit_option_dialog",
|
|
-- {n_id = n_id, d_id = d_id, o_id = o_id})
|
|
end
|
|
end
|
|
|
|
|
|
-- can this trade be made? called in allow_take
|
|
yl_speak_up.can_trade_simple = function(player, count)
|
|
if(not(player)) then
|
|
return 0
|
|
end
|
|
local pname = player:get_player_name()
|
|
-- which trade are we talking about?
|
|
local trade = yl_speak_up.trade[pname]
|
|
-- do we have all the necessary data?
|
|
if(not(trade) or trade.trade_type ~= "trade_simple") then
|
|
return 0
|
|
end
|
|
|
|
-- the player tries to take *less* items than what his payment is;
|
|
-- avoid this confusion!
|
|
if(ItemStack(trade.npc_gives):get_count() ~= count) then
|
|
return 0
|
|
end
|
|
-- buy, sell and config items need to be placed somewhere
|
|
local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
|
|
-- the players' inventory
|
|
local player_inv = player:get_inventory()
|
|
-- the NPCs' inventory
|
|
local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(trade.n_id)})
|
|
|
|
-- is the payment in the payment slot?
|
|
if( not(trade_inv:contains_item("pay", trade.player_gives))
|
|
-- is the item to be sold in the buy slot?
|
|
or not(trade_inv:contains_item("buy", trade.npc_gives))
|
|
-- has the NPC room for the payment?
|
|
or not(npc_inv:room_for_item("npc_main", trade.player_gives))
|
|
-- has the player room for the sold item?
|
|
or not(player_inv:room_for_item("main", trade.npc_gives))) then
|
|
-- trade not possible
|
|
return 0
|
|
end
|
|
|
|
-- used items cannot be sold as there is no fair way to indicate how
|
|
-- much they are used
|
|
if( trade_inv:get_stack("pay", 1):get_wear() > 0) then
|
|
return 0
|
|
end
|
|
|
|
-- all ok; all items that are to be sold can be taken
|
|
return ItemStack(trade.npc_gives):get_count()
|
|
end
|
|
|
|
|
|
-- actually execute the trade
|
|
yl_speak_up.do_trade_simple = function(player, count)
|
|
-- can the trade be made?
|
|
if(not(yl_speak_up.can_trade_simple(player, count))) then
|
|
return
|
|
end
|
|
|
|
local pname = player:get_player_name()
|
|
-- which trade are we talking about?
|
|
local trade = yl_speak_up.trade[pname]
|
|
|
|
-- buy, sell and config items need to be placed somewhere
|
|
local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
|
|
-- the NPCs' inventory
|
|
local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(trade.n_id)})
|
|
|
|
-- the NPC sells these items right now, and the player is moving it to his inventory
|
|
npc_inv:remove_item("npc_main", trade.npc_gives)
|
|
|
|
-- move price items to the NPC
|
|
local stack = trade_inv:remove_item("pay", trade.player_gives)
|
|
npc_inv:add_item("npc_main", stack)
|
|
-- save the inventory of the npc so that the payment does not get lost
|
|
yl_speak_up.save_npc_inventory( trade.n_id )
|
|
|
|
-- store for statistics how many times the player has executed this trade
|
|
-- (this is also necessary to switch to the right target dialog when
|
|
-- dealing with dialog options trades)
|
|
yl_speak_up.trade[pname].trade_done = yl_speak_up.trade[pname].trade_done + 1
|
|
|
|
-- log the trade
|
|
yl_speak_up.log_change(pname, trade.n_id,
|
|
"bought "..tostring(trade.npc_gives)..
|
|
" for "..tostring(trade.player_gives))
|
|
end
|
|
|
|
|
|
-- try to do the trade directly - without moving items in the buy/sell inventory slot
|
|
-- returns error_msg or "" when successful
|
|
yl_speak_up.do_trade_direct = function(player)
|
|
if(not(player)) then
|
|
return "Player, where are you?"
|
|
end
|
|
local pname = player:get_player_name()
|
|
-- which trade are we talking about?
|
|
local trade = yl_speak_up.trade[pname]
|
|
-- do we have all the necessary data?
|
|
if(not(trade) or trade.trade_type ~= "trade_simple") then
|
|
return "No trade found!"
|
|
end
|
|
-- the players' inventory
|
|
local player_inv = player:get_inventory()
|
|
-- the NPCs' inventory
|
|
local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(trade.n_id)})
|
|
-- has the NPC the item he wants to sell?
|
|
if( not(npc_inv:contains_item("npc_main", trade.npc_gives))) then
|
|
return "Sorry. This item is sold out!"
|
|
-- has the NPC room for the payment?
|
|
elseif(not(npc_inv:room_for_item("npc_main", trade.player_gives))) then
|
|
return "Sorry. No room to store your payment!\n"..
|
|
"Please try again later."
|
|
-- can the player pay the price?
|
|
elseif(not(player_inv:contains_item("main", trade.player_gives))) then
|
|
return "You can't pay the price!"
|
|
-- has the player room for the sold item?
|
|
elseif(not(player_inv:room_for_item("main", trade.npc_gives))) then
|
|
return "You don't have enough free inventory space.\n"..
|
|
"Trade aborted."
|
|
end
|
|
local payment = player_inv:remove_item("main", trade.player_gives)
|
|
local sold = npc_inv:remove_item("npc_main", trade.npc_gives)
|
|
-- used items cannot be sold as there is no fair way to indicate how
|
|
-- much they are used
|
|
if(payment:get_wear() > 0 or sold:get_wear() > 0) then
|
|
-- revert the trade
|
|
player_inv:add_item("main", payment)
|
|
npc_inv:add_item("npc_main", sold)
|
|
return "At least one of the items that shall be traded\n"..
|
|
"is dammaged. Trade aborted."
|
|
end
|
|
player_inv:add_item("main", sold)
|
|
npc_inv:add_item("npc_main", payment)
|
|
-- save the inventory of the npc so that the payment does not get lost
|
|
yl_speak_up.save_npc_inventory( trade.n_id )
|
|
-- store for statistics how many times the player has executed this trade
|
|
-- (this is also necessary to switch to the right target dialog when
|
|
-- dealing with dialog options trades)
|
|
yl_speak_up.trade[pname].trade_done = yl_speak_up.trade[pname].trade_done + 1
|
|
-- log the trade
|
|
yl_speak_up.log_change(pname, trade.n_id,
|
|
"bought "..tostring(trade.npc_gives)..
|
|
" for "..tostring(trade.player_gives))
|
|
return ""
|
|
end
|
|
|
|
|
|
-- simple trade: one item(stack) for another
|
|
-- handles configuration of new trades and showing the formspec for trades;
|
|
-- checks if payment and buying is possible
|
|
yl_speak_up.get_fs_trade_simple = function(player, trade_id)
|
|
if(not(player)) then
|
|
return yl_speak_up.trade_fail_fs
|
|
end
|
|
local pname = player:get_player_name()
|
|
-- which trade are we talking about?
|
|
local trade = yl_speak_up.trade[pname]
|
|
|
|
if(trade and trade.trade_id and trade_id and trade.trade_id == trade_id) then
|
|
-- nothing to do; trade is already loaded and stored
|
|
elseif(trade_id) then
|
|
local d_id = yl_speak_up.speak_to[pname].d_id
|
|
local n_id = yl_speak_up.speak_to[pname].n_id
|
|
local dialog = yl_speak_up.speak_to[pname].dialog
|
|
|
|
yl_speak_up.setup_trade_limits(dialog)
|
|
trade = {
|
|
-- we start with the simple trade
|
|
trade_type = "trade_simple",
|
|
-- can be determined from other variables, but it is easier to store it here
|
|
n_id = n_id,
|
|
npc_name = dialog.n_npc,
|
|
-- for statistics and in order to determine which dialog to show next
|
|
trade_done = 0,
|
|
-- we need to know which option this is
|
|
target_dialog = d_id,
|
|
trade_is_trade_list = true,
|
|
trade_id = trade_id
|
|
}
|
|
if(dialog.trades[ trade_id ]) then
|
|
trade.player_gives = dialog.trades[ trade_id ].pay[1]
|
|
trade.npc_gives = dialog.trades[ trade_id ].buy[1]
|
|
trade.trade_is_trade_list = not(dialog.trades[ trade_id ].d_id)
|
|
yl_speak_up.speak_to[pname].trade_id = trade_id
|
|
-- copy the limits
|
|
local stack = ItemStack(trade.npc_gives)
|
|
trade.npc_gives_name = stack:get_name()
|
|
trade.npc_gives_amount = stack:get_count()
|
|
trade.min_storage = dialog.trades.limits.sell_if_more[ trade.npc_gives_name ]
|
|
stack = ItemStack(trade.player_gives)
|
|
trade.player_gives_name = stack:get_name()
|
|
trade.player_gives_amount = stack:get_count()
|
|
trade.max_storage = dialog.trades.limits.buy_if_less[ trade.player_gives_name ]
|
|
else
|
|
trade.edit_trade = true
|
|
end
|
|
yl_speak_up.trade[pname] = trade
|
|
-- store which action we are working at
|
|
trade.a_id = yl_speak_up.speak_to[pname].a_id
|
|
else
|
|
trade_id = yl_speak_up.speak_to[pname].trade_id
|
|
trade.trade_id = trade_id
|
|
end
|
|
|
|
-- do we have all the necessary data?
|
|
if(not(trade) or trade.trade_type ~= "trade_simple") then
|
|
return yl_speak_up.trade_fail_fs
|
|
end
|
|
-- the common formspec, shared by actual trade and configuration
|
|
-- no listring here as that would make things more complicated
|
|
local formspec = -- "size[8.5,8]"..
|
|
yl_speak_up.show_fs_simple_deco(8.5, 8)..
|
|
"label[4.35,0.7;"..minetest.formspec_escape(trade.npc_name).." sells:]"..
|
|
"list[current_player;main;0.2,3.85;8,1;]"..
|
|
"list[current_player;main;0.2,5.08;8,3;8]"
|
|
|
|
-- configuration of a new trade happens here
|
|
if(not(trade.player_gives) or not(trade.npc_gives) or trade.edit_trade) then
|
|
return yl_speak_up.get_fs_add_trade_simple(player, trade_id)
|
|
end
|
|
|
|
-- view for the customer when actually trading
|
|
|
|
-- buy, sell and config items need to be placed somewhere
|
|
local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
|
|
-- the players' inventory
|
|
local player_inv = player:get_inventory()
|
|
-- the NPCs' inventory
|
|
local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(trade.n_id)})
|
|
|
|
-- show edit button for the owner if in edit_mode
|
|
if(yl_speak_up.may_edit_npc(player, trade.n_id)) then
|
|
-- for trades in trade list: allow delete (new trades can easily be added)
|
|
-- allow delete for trades in trade list even if not in edit mode
|
|
-- (entering edit mode for that would be too much work)
|
|
formspec = formspec..
|
|
"button[0.2,2.0;1.2,0.9;delete_trade_simple;Delete]"..
|
|
"tooltip[delete_trade_simple;"..
|
|
"Delete this trade. You can do so only if\n"..
|
|
"you can edit the NPC as such (i.e. own it).]"
|
|
if(not(trade.trade_is_trade_list)) then
|
|
-- normal back button will lead to the talk dialog or edit option dialog;
|
|
-- add this second back button to go back to the list of all dialog option trades
|
|
formspec = formspec..
|
|
"button[0.2,1.0;2.0,0.9;show_trade_list_dialog_options;Back to list]"..
|
|
"tooltip[show_trade_list_dialog_options;"..
|
|
"Click here to get back to the list of all trades\n"..
|
|
"associated with dialog options (like this one).]"
|
|
local dialog = yl_speak_up.speak_to[pname].dialog
|
|
local tr = dialog.trades[ trade_id ]
|
|
if( tr and tr.d_id and tr.o_id) then
|
|
formspec = formspec..
|
|
"label[0.2,-0.3;This trade belongs to dialog "..
|
|
minetest.formspec_escape(tostring(tr.d_id)).." option "..
|
|
minetest.formspec_escape(tostring(tr.o_id))..".]"
|
|
end
|
|
end
|
|
end
|
|
-- the functionality of the back button depends on context
|
|
if(not(trade.trade_is_trade_list)) then
|
|
-- go back to the right dialog (or forward to the next one)
|
|
formspec = formspec..
|
|
-- "button[6.2,1.6;2.0,0.9;finished_trading;Back to talk]"..
|
|
"button[0.2,0.0;2.0,0.9;finished_trading;Back to talk]"..
|
|
"tooltip[finished_trading;Click here once you've traded enough with this "..
|
|
"NPC and want to get back to talking.]"
|
|
else
|
|
-- go back to the trade list
|
|
formspec = formspec.. "button[0.2,0.0;2.0,0.9;back_to_trade_list;Back to list]"..
|
|
"tooltip[back_to_trade_list;Click here once you've traded enough with this "..
|
|
"NPC and want to get back to the trade list.]"
|
|
end
|
|
|
|
|
|
local trade_possible_msg = "Status of trade: Unknown."
|
|
local can_trade = false
|
|
-- find out how much the npc has stoerd
|
|
local stock_pay = 0
|
|
local stock_buy = 0
|
|
-- only count the inv if there actually are any mins or max
|
|
if(trade.min_storage or trade.max_storage) then
|
|
local n_id = yl_speak_up.speak_to[pname].n_id
|
|
local counted_npc_inv = {}
|
|
counted_npc_inv = yl_speak_up.count_npc_inv(n_id)
|
|
stock_pay = counted_npc_inv[trade.player_gives_name] or 0
|
|
stock_buy = counted_npc_inv[trade.npc_gives_name] or 0
|
|
end
|
|
-- can the NPC provide his part?
|
|
if(not(npc_inv:contains_item("npc_main", trade.npc_gives))) then
|
|
trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
|
|
" ran out of stock.\nPlease come back later."
|
|
-- has the NPC room for the payment?
|
|
elseif(not(npc_inv:room_for_item("npc_main", trade.player_gives))) then
|
|
trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
|
|
" ran out of inventory space.\nThere is no room to store your payment!"
|
|
-- trade limit: is enough left after the player buys the item?
|
|
elseif(trade.min_storage and trade.min_storage > stock_buy - trade.npc_gives_amount) then
|
|
trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
|
|
" currently does not want to\nsell that much."..
|
|
" Current stock: "..tostring(stock_buy)..
|
|
" (min: "..tostring(trade.min_storage)..
|
|
"). Perhaps later?"
|
|
-- trade limit: make sure the bought amount does not exceed the desired maximum
|
|
elseif(trade.max_storage and trade.max_storage < stock_pay + trade.player_gives_amount) then
|
|
trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
|
|
" currently does not want to\nbuy that much."..
|
|
" Current stock: "..tostring(stock_pay)..
|
|
" (max: "..tostring(trade.max_storage)..
|
|
"). Perhaps later?"
|
|
-- trade as an action
|
|
elseif(not(trade.trade_is_trade_list)) then
|
|
if(trade_inv:contains_item("pay", trade.player_gives)) then
|
|
-- all good so far; move the price stack to the pay slot
|
|
-- move price item to the price slot
|
|
local stack = player_inv:remove_item("main", trade.player_gives)
|
|
trade_inv:add_item("pay", stack)
|
|
trade_possible_msg = "Please take your purchase!"
|
|
can_trade = true
|
|
elseif(trade_inv:is_empty("pay")) then
|
|
trade_possible_msg = "Please insert the right payment in the pay slot\n"..
|
|
"and then take your purchase."
|
|
can_trade = false
|
|
else
|
|
trade_possible_msg = "This is not what "..minetest.formspec_escape(trade.npc_name)..
|
|
" wants.\nPlease insert the right payment!"
|
|
can_trade = false
|
|
end
|
|
-- can the player pay?
|
|
elseif(not(player_inv:contains_item("main", trade.player_gives))) then
|
|
-- both slots will remain empty
|
|
trade_possible_msg = "You cannot pay the price."
|
|
-- is the slot for the payment empty?
|
|
elseif not(trade_inv:is_empty("pay")) then
|
|
-- both slots will remain empty
|
|
-- (the slot may already contain the right things; we'll find that out later on)
|
|
trade_possible_msg = "This is not what "..minetest.formspec_escape(trade.npc_name)..
|
|
" wants.\nPlease insert the right payment!"
|
|
else
|
|
trade_possible_msg = "Please insert the right payment in the pay slot\n"..
|
|
"or click on \"buy\"."..
|
|
"]button[6.5,2.0;1.2,0.9;buy_directly;Buy]"..
|
|
"tooltip[buy_directly;"..
|
|
"Click here in order to buy directly without having to insert\n"..
|
|
"your payment manually into the pay slot."
|
|
can_trade = true
|
|
end
|
|
|
|
-- make sure the sale slot is empty (we will fill it if the trade is possible)
|
|
trade_inv:set_stack("buy", 1, "")
|
|
-- after all this: does the payment slot contain the right things?
|
|
if(can_trade and trade_inv:contains_item("pay", trade.player_gives)) then
|
|
trade_possible_msg = "Take the offered item(s) in order to buy them."
|
|
|
|
-- only new/undammaged tools, weapons and armor are accepted
|
|
if(trade_inv:get_stack("pay", 1):get_wear() > 0) then
|
|
trade_possible_msg = "Sorry. "..minetest.formspec_escape(trade.npc_name)..
|
|
" accepts only undammaged items."
|
|
else
|
|
-- put a *copy* of the item(stack) that is to be sold in the sale slot
|
|
trade_inv:add_item("buy", trade.npc_gives)
|
|
end
|
|
end
|
|
|
|
if(can_trade and not(player_inv:room_for_item("main", trade.npc_gives))) then
|
|
-- the player has no room for the sold item; give a warning
|
|
trade_possible_msg = "Careful! You do not seem to have enough\n"..
|
|
"free inventory space to store your purchase."
|
|
end
|
|
|
|
local trades_done = "Not yet traded."
|
|
if(yl_speak_up.trade[pname].trade_done > 0) then
|
|
trades_done = "Traded: "..tostring(yl_speak_up.trade[pname].trade_done).." time(s)"
|
|
end
|
|
|
|
return formspec..
|
|
"label[2.5,0.0;Trading with "..minetest.formspec_escape(trade.npc_name).."]"..
|
|
"label[1.5,0.7;You pay:]"..
|
|
-- show images of price and what is sold so that the player knows what
|
|
-- it costs and what he will get even if the trade is not possible at
|
|
-- that moment
|
|
"item_image[2.1,1.2;0.8,0.8;"..tostring(trade.player_gives).."]"..
|
|
"item_image[5.1,1.2;0.8,0.8;"..tostring(trade.npc_gives).."]"..
|
|
"image[3.5,2.0;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
|
|
-- show the pay slot from the detached player's trade inventory
|
|
"list[detached:yl_speak_up_player_"..pname..";pay;2,2.0;1,1;]" ..
|
|
-- show the buy slot from the same inventory
|
|
"list[detached:yl_speak_up_player_"..pname..";buy;5,2.0;1,1;]" ..
|
|
"label[1.5,3.0;"..trade_possible_msg.."]"..
|
|
"label[6.0,1.5;"..trades_done.."]"
|
|
end
|
|
|
|
|
|
-- functions for handling the detached trade inventory of players
|
|
-- these functions exist as extra functions so that they can be changed with /npc_talk_reload
|
|
|
|
-- moving of items between diffrent lists is not allowed
|
|
yl_speak_up.trade_inv_allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
|
|
if(not(player)) then
|
|
return 0
|
|
end
|
|
if(from_list ~= to_list) then
|
|
return 0
|
|
end
|
|
return count
|
|
end
|
|
|
|
-- these all require calling special functions, depending on context
|
|
yl_speak_up.trade_inv_allow_put = function(inv, listname, index, stack, player)
|
|
if(not(player)) then
|
|
return 0
|
|
end
|
|
-- the "buy" slot is managed by the NPC; the player only takes from it
|
|
if(listname == "buy") then
|
|
return 0
|
|
end
|
|
-- do not allow used items or items with metadata in the setup slots
|
|
-- (they can't really be traded later on anyway)
|
|
if(listname == "setup") then
|
|
-- check if player can edit NPC, item is undammaged and contains no metadata
|
|
return yl_speak_up.inventory_allow_item(player, stack,
|
|
"yl_speak_up:add_trade_simple")
|
|
end
|
|
-- allow putting something in in edit mode - but not otherwise
|
|
if(listname == "npc_gives") then
|
|
local pname = player:get_player_name()
|
|
local n_id = yl_speak_up.speak_to[pname].n_id
|
|
-- only in edit mode! else the NPC manages this slot
|
|
if(not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id) then
|
|
return 0
|
|
end
|
|
end
|
|
return stack:get_count()
|
|
end
|
|
|
|
yl_speak_up.trade_inv_allow_take = function(inv, listname, index, stack, player)
|
|
if(not(player)) then
|
|
return 0
|
|
end
|
|
-- can the trade be made?
|
|
if(listname == "buy") then
|
|
return yl_speak_up.can_trade_simple(player, stack:get_count())
|
|
end
|
|
return stack:get_count()
|
|
end
|
|
|
|
yl_speak_up.trade_inv_on_move = function(inv, from_list, from_index, to_list, to_index, count, player)
|
|
end
|
|
|
|
yl_speak_up.trade_inv_on_put = function(inv, listname, index, stack, player)
|
|
if(listname == "pay") then
|
|
local pname = player:get_player_name()
|
|
-- show formspec with updated information (perhaps sale is now possible)
|
|
yl_speak_up.show_fs(player, "trade_simple")
|
|
elseif(listname == "npc_gives"
|
|
or listname == "npc_wants") then
|
|
-- monitor changes in order to adjust the formspec
|
|
yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "put")
|
|
end
|
|
end
|
|
|
|
yl_speak_up.trade_inv_on_take = function(inv, listname, index, stack, player)
|
|
-- the player may have put something wrong in the payment slot
|
|
-- -> show updated formspec
|
|
if(listname == "pay") then
|
|
local pname = player:get_player_name()
|
|
-- show formspec with updated information (perhaps sale is now possible)
|
|
yl_speak_up.show_fs(player, "trade_simple")
|
|
elseif(listname == "buy") then
|
|
-- do the exchange
|
|
yl_speak_up.do_trade_simple(player, stack:get_count())
|
|
local pname = player:get_player_name()
|
|
-- which trade are we talking about?
|
|
local trade = yl_speak_up.trade[pname]
|
|
-- when the player traded once inside an action: that action was a success;
|
|
-- execute next action
|
|
-- but only if not in edit mode
|
|
if(trade and trade.trade_done > 0
|
|
and not(trade.trade_is_trade_list)
|
|
and yl_speak_up.edit_mode[pname] ~= trade.n_id) then
|
|
local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
|
|
-- return surplus items from the pay slot
|
|
local pay = trade_inv:get_stack("pay", 1)
|
|
local player_inv = player:get_inventory()
|
|
if( pay and player_inv:room_for_item("main", pay)) then
|
|
player_inv:add_item("main", pay)
|
|
trade_inv:set_stack("pay", 1, "")
|
|
end
|
|
-- done trading
|
|
yl_speak_up.speak_to[pname].target_d_id = nil
|
|
yl_speak_up.speak_to[pname].trade_id = nil
|
|
-- execute the next action
|
|
yl_speak_up.execute_next_action(player, trade.a_id, true)
|
|
return
|
|
end
|
|
-- information may require an update (NPC might now be out of stock), or
|
|
-- the player can do the trade a second time
|
|
yl_speak_up.show_fs(player, "trade_simple")
|
|
elseif(listname == "npc_gives"
|
|
or listname == "npc_wants") then
|
|
-- monitor changes in order to adjust the formspec
|
|
yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "take")
|
|
end
|
|
end
|
|
|
|
-- create a detached inventory for the *player* for trading with the npcs
|
|
-- (called in minetest.register_on_joinplayer)
|
|
yl_speak_up.player_joined_add_trade_inv = function(player, last_login)
|
|
local pname = player:get_player_name()
|
|
|
|
-- create the detached inventory;
|
|
-- the functions for monitoring changes will be important later on
|
|
-- only the the player owning this detached inventory may access it
|
|
local trade_inv = minetest.create_detached_inventory("yl_speak_up_player_"..tostring(pname), {
|
|
allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
|
|
return yl_speak_up.trade_inv_allow_move(inv, from_list, from_index, to_list,
|
|
to_index, count, player)
|
|
end,
|
|
|
|
allow_put = function(inv, listname, index, stack, player)
|
|
return yl_speak_up.trade_inv_allow_put(inv, listname, index, stack, player)
|
|
end,
|
|
allow_take = function(inv, listname, index, stack, player)
|
|
return yl_speak_up.trade_inv_allow_take(inv, listname, index, stack, player)
|
|
end,
|
|
on_move = function(inv, from_list, from_index, to_list, to_index, count, player)
|
|
return yl_speak_up.trade_inv_on_move(inv, from_list, from_index, to_list,
|
|
to_index, count, player)
|
|
end,
|
|
on_put = function(inv, listname, index, stack, player)
|
|
return yl_speak_up.trade_inv_on_put(inv, listname, index, stack, player)
|
|
end,
|
|
on_take = function(inv, listname, index, stack, player)
|
|
return yl_speak_up.trade_inv_on_take(inv, listname, index, stack, player)
|
|
end,
|
|
})
|
|
-- prepare the actual inventories
|
|
trade_inv:set_size("pay", 1)
|
|
trade_inv:set_size("buy", 1)
|
|
-- for setting up new simple trades
|
|
trade_inv:set_size("setup", 2*1)
|
|
-- for setting up actions
|
|
trade_inv:set_size("npc_gives", 1)
|
|
trade_inv:set_size("npc_wants", 1)
|
|
-- for setting wielded items (left and right)
|
|
trade_inv:set_size("wield", 2)
|
|
end
|